newhall



2 Sheets-Sheet 1.

A NEWHALL. Polishing-Machine.

No. 224,214. Patented Feb. 3, 1880. v 4

NAPETERS, PHOTO-UTMQGRAPNER, WASHINGTON, I: O4

2Sheets8heet 2.. A; NE WHA LL.

Polishifig-Machina. N07 224,214. Patented Fe zb. 3,1880.

1 UNITED STATES 1 *OFFICE.

ALLEN NEWHALL, 0F JERSEY CITY, NEWJERSEY.

POLISHING-MACHINE.

SPECIFICATION forming part of Letters Patent N 224,214, dated February 3, 1880.

Application filed December 5, 1879. i

To all whom t may concern Be it known that I, ALLEN NEWHALL, of Jersey City, in the county of Hudson and State of New Jersey, have invented an Improvement in Turning and Polishing Machines, of which the following'is a specification. I

The object of this invention is to finish and polish vegetable-ivory buttons; but the mechanism may be used for finishing and polishing other kinds of buttons, and also for boringthe buttons, and for turning and finishing other articles. i

I make use of a circular range of revolving spindles driven by a belt, and thesespindles are sustained in heads that are revolved progressively and carry around the circular range of revolvingspindles. Each spindleis provided with a clamping-chuck that is opened by an end movement given to the spindle at a time when it is not being revolved by the belt. At this time one buttoufalls out or is removed, and another button is introduced. The clamping-spindles are brought around successively, and theturning, polishing, finishing, or boring tools are upon a tool-holder that is moved with the main revolving head and pressed toward the buttons, and then springs backout of the way and returns to the place ofbeginning for the tools to act upon the negtt button asit is brought around.

In the drawings,

the machine.

section, at the line Figure 1 is an elevation-of Fig.3 is a section at the end of the main shaft. -Fig. iris an elevation representing the boring mechanism; and Figs. 5 to;8 represent the buttons with-the holes asbored progressively. u i

The frame a is of suitable character-tosustain the parts.

, is moved around gradually by a screw or worm pinion, c, upon a shaft,.c ,'to which motionis given by the belt at or otherwise. 7

The pulleys h uponthe spindles h are in Fig. 2 is'a plan,partially--in The main shaft 1) is supported iu-bearings and provided with a wheel, 0,that.

contact with the belt g during about half the revolution of the heads 6 e, and hence are re- EDlVGd bysaid belt; but during the other portion of the'revolution of e e the spindles'do not turn on their axes.

Each spindle is made with a clamping-jaw or chuck adapted to the article that is to be operated upon. In the drawings such chucks are shown asreceiv'ing button-blanks i i.

The chuckis made of spring-jaws 70, passing into the cup-shaped or hollow end of the spindle h, and the spindle is mortised tor the pa ssage of a pin, 2, that connects the jaws k with the ring 3 around the spindle. There is an expansive spring, Z, between the collar 4 of the spindle and the no g 3, so that by forcing the collar 4 away from the, ring 3 the shaft It will end movement given to the spindle to draw its There isa neck at 5 around the spindle, near its back flaring end awayfrom the spring-jaws.

end, and also an annular flange, m, upon the frame a, within Whichthe spindle-necks are contained. This annular flange m is made thicker or bent backwardly at one place, to

come into contaetwith the spindle when it is not being revolved, and, acting within theneck against the head of the spindle, drawsthe spindle back enough to allow the clam ping-jaws to open and liberate the buttons, and the jaws are held open long enough to allow another button to be placed into the jaws.

It is preferable to have the'inner end of the spindle pointed, so that it will bear against the bottom of the annular groove in which the ends of the spindles travel, except where the cam-part of the flange acts to open the clamp i or chuck; I I have shownthe shaft dand pulley d? as Allthespindles of the circular range are constructed and operate in the manner described.

' Upon theendof the shaft b there is a face- .cam, n,- with asmany inclined faces, similar to saw-teeth, as there are spindles in the. circular range, and upon the shaft bthere is a corresponding but reversed cam, 0, within which the shaft 1) turns, the cam being kept from turning by a pin, 6, in the slotted standard 1', and there is a spring, 8, acting against 0 to press it against 41. Hence as n is revolved with the shaft 1) it presses the cam 0 back on the shaft 1), and as the teeth clear each other the cam 0 is moved forward by the spring 8.

A similar movement is also given to the toolcarrier t, that has an eye around the shaft 1), and is between the cam 0 and the spring 8. By this movement the tools that are carried by the tool-carrier t are pressed toward the buttons, and then moved back out of the way and brought around to the next button in the range.

In order to cause the tool-carrier and tools to move partially around at the same rate of revolution as the heads 6 e and occupy the proper place. while acting upon the buttons, I provide the studs t upon the head e,corre sponding in number with the spindles, and upon the tool-carrier there is a stud, iv, the position of which is such that when the cam 0 is moved endwise of the shaft I), as aforesaid, the stud 20 will be moved in between the studs '0, and the next one of those studs coming along presses against the stud w and moves the same and the tool-carrier around with it at the same speed as the heads a 0, so that the tools that are carried by the carrier t remain in the proper position to the buttons while being pressed up to their work.

As the tool-carrier is moved the spring 10 is strained, and as soon as the teeth of 0 separate from a the spring 8 moves the cam 0 endwise of the shaft b, separating the studs 27 and w, and then the spring 10 returns the parts to their place of beginning.

The tools that are sustained and moved by the tool-carrier will be constructed according to the work to be done. At 12 there is a cutter to groove the surfaces of the buttons, and

at 13 and let there are polishing brushes, These act in succession upon the buttons as brought around by the revolving heads and revolved by the spindles.

In Fig. 4 I have shown the arrangement of drills that may be used to bore two or more holes in the buttons before the turning or polishing. In this case the spindles It should be held, in order that the drills, which are not on the center line of the spindles, may act at the proper places and bore the holes in succession in the correct positions. The drill l4 bores the hole in the blank Fig. 5; the drill 15 bores the second hole in the blank Fig. 6; and if there are other holes to be provided the drills l6 and 17 bore the holes in the positions indicated by corresponding numbers in Figs. 7

and 8.

It is to be understood that the heads 6 0 will have to be larger and the number of spinclamp, 20, on the head 6 adjacent to each spindle, with a spring end that is pressed upon by coming into contact with a stationary segmental fence, 21. hen the movement of the heads 0 c carries the lever-clamp beyond 21 the spindle is relieved and ready to be revolved by the belt.

The tool-carrier shown in Fig. 4 for the boring tools or drills is an extension of or else permanently connected to the tool-carrier t, and it receives the same movements, so that the drills are pressed to the buttons while the tool-carrier and heads 0 c are moving together, and the drills are moved away from the buttons by the tool-carrier, and then turned back to operate upon the next buttons in the circular range, the same as the other tools. In Fig. 4 a portion of the tool-carrier t is represented as broken olf to show the studs 1:

and w.

I am aware that a machine has been made for polishing buttons containing a revolving head with a circular range of spindles driven by gearing.

In my machine the spindles are driven by a belt, so that the spindles may not be acted on by the belt during a portion of the time that they are being carried around by the head. This allows the buttons to be introduced and withdrawn with facility or bored, and a high velocity can be given to the spindles while being rotated to render the polishing and finishing operations more perfect and rapid.

I claim as my invention- 1. A shaft revolved progressively and the heads 66 upon the same, in combination with the spindles h, placed in a circular range, the pulleys h of the spindles, and the drivingbelt g, substantially as set forth.

2. The circular range of spindles, each provided with a clamping-chuck, in combination with mechanism for rerolving the spindles, tools for acting upon the buttons or other articles, a tool-carrier, and mechanism, substantially as specified, for moving the tools toward the buttons, and also moving the tool-carrier around with the heads that carry the circular range of spindles during the time that the tools are in operation, then moving them away from the buttons and bringing them back to the place of beginning, substantially as set forth.

3. The combination, with the heads 0 e, circular range of spindles l1, and tool-carrier t, of the cams n and 0, and studs 1; and 'w, and springs s and 10, substantially as set forth.

4. The combination of the revolving spindle h, clamping-jaws 7., spring 1, ring 3, and aunular flange m, substantially as set forth.

Signed by me this 28th day of November, 

